Παραπομπή APA

Kossoff, P., Hernández, F., Vekoh-Pardo, M. V., & Zimmerman, M. (1989). Urban helminthiasis in two socioeconomically distinct Costa Rican communities.

Παραπομπή Chicago Style

Kossoff, Peter, Francisco Hernández, Marieta Visconti Vekoh-Pardo, και Michael Zimmerman. Urban Helminthiasis in Two Socioeconomically Distinct Costa Rican Communities. 1989.

Παραπομπή MLA

Kossoff, Peter, Francisco Hernández, Marieta Visconti Vekoh-Pardo, και Michael Zimmerman. Urban Helminthiasis in Two Socioeconomically Distinct Costa Rican Communities. 1989.

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